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dbc22a1785
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3324 The SEV-ES stacks currently share a page with the reset code and data. Separate the SEV-ES stacks from the reset vector code and data to avoid possible stack overflows from overwriting the code and/or data. When SEV-ES is enabled, invoke the GetWakeupBuffer() routine a second time to allocate a new area, below the reset vector and data. Both the PEI and DXE versions of GetWakeupBuffer() are changed so that when PcdSevEsIsEnabled is true, they will track the previous reset buffer allocation in order to ensure that the new buffer allocation is below the previous allocation. When PcdSevEsIsEnabled is false, the original logic is followed. Fixes: 7b7508ad784d16a5208c8d12dff43aef6df0835b Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Marvin Häuser <mhaeuser@posteo.de> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Message-Id: <3cae2ac836884b131725866264e0a0e1897052de.1621024125.git.thomas.lendacky@amd.com> Acked-by: Laszlo Ersek <lersek@redhat.com>